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. 2021 Oct 18;13(6):1467–1496. doi: 10.1007/s12571-021-01220-5

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© The Author(s) 2021

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Fig. 5 — Average percentage increase in crop and/or household income of target group compared to comparison group for different types of interventions (in the information on certification, changes in household income were found to be 13% but were not significant, which is why we did not present this change in the figure). Sources: (Dalberg & Wageningen University, 2018; Hemming et al., 2018; Oya et al., 2017; Ton et al., 2017; Waddington et al., 2014)